Import JSC-based Qt Script from Kent's tree.

1 files changed, 181 insertions, 0 deletions

diff --git a/src/script/api/qscriptstring.cpp b/src/script/api/qscriptstring.cpp
new file mode 100644
index 0000000..89ac4ac
--- /dev/null
+++ b/src/script/api/qscriptstring.cpp
@@ -0,0 +1,181 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+#include "qscriptstring.h"
+
+#ifndef QT_NO_SCRIPT
+
+#include "qscriptstring_p.h"
+
+QT_BEGIN_NAMESPACE
+
+/*!
+  \since 4.4
+  \class QScriptString
+
+  \brief The QScriptString class acts as a handle to "interned" strings in a QScriptEngine.
+
+  \ingroup script
+  \mainclass
+
+  QScriptString can be used to achieve faster (repeated)
+  property getting/setting, and comparison of property names, of
+  script objects.
+
+  To get a QScriptString representation of a string, pass the string
+  to QScriptEngine::toStringHandle(). The typical usage pattern is to
+  register one or more pre-defined strings when setting up your script
+  environment, then subsequently use the relevant QScriptString as
+  argument to e.g. QScriptValue::property().
+
+  Call the toString() function to obtain the string that a
+  QScriptString represents.
+*/
+
+/*!
+  \internal
+*/
+QScriptStringPrivate::QScriptStringPrivate()
+{
+    ref = 0;
+}
+
+/*!
+  \internal
+*/
+QScriptStringPrivate::~QScriptStringPrivate()
+{
+}
+
+/*!
+  \internal
+*/
+void QScriptStringPrivate::init(QScriptString &q, const QString &value)
+{
+    Q_ASSERT(!q.isValid());
+    q.d_ptr = new QScriptStringPrivate();
+    q.d_ptr->value = value;
+    q.d_ptr->ref.ref();
+}
+
+/*!
+  Constructs an invalid QScriptString.
+*/
+QScriptString::QScriptString()
+    : d_ptr(0)
+{
+}
+
+/*!
+  Constructs a new QScriptString that is a copy of \a other.
+*/
+QScriptString::QScriptString(const QScriptString &other)
+    : d_ptr(other.d_ptr)
+{
+    if (d_ptr)
+        d_ptr->ref.ref();
+}
+
+/*!
+  Destroys this QScriptString.
+*/
+QScriptString::~QScriptString()
+{
+    if (d_ptr && !d_ptr->ref.deref()) {
+//    Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented");
+#if 0
+        if (isValid()) {
+            d_ptr->engine->uninternString(d_ptr);
+        } else {
+            // the engine has already been deleted
+            delete d_ptr;
+        }
+#endif
+        delete d_ptr;
+        d_ptr = 0;
+    }
+}
+
+/*!
+  Assigns the \a other value to this QScriptString.
+*/
+QScriptString &QScriptString::operator=(const QScriptString &other)
+{
+    if (d_ptr == other.d_ptr)
+        return *this;
+    if (d_ptr && !d_ptr->ref.deref()) {
+//        Q_ASSERT_X(false, Q_FUNC_INFO, "not implemented");
+        delete d_ptr;
+    }
+    d_ptr = other.d_ptr;
+    if (d_ptr)
+        d_ptr->ref.ref();
+    return *this;
+}
+
+/*!
+  Returns true if this QScriptString is valid; otherwise
+  returns false.
+*/
+bool QScriptString::isValid() const
+{
+    Q_D(const QScriptString);
+    return (d != 0);
+}
+
+/*!
+  Returns true if this QScriptString is equal to \a other;
+  otherwise returns false.
+*/
+bool QScriptString::operator==(const QScriptString &other) const
+{
+    Q_D(const QScriptString);
+    return (d == other.d_func());
+}
+
+/*!
+  Returns true if this QScriptString is not equal to \a other;
+  otherwise returns false.
+*/
+bool QScriptString::operator!=(const QScriptString &other) const
+{
+    Q_D(const QScriptString);
+    return (d != other.d_func());
+}
+
+/*!
+  Returns the string that this QScriptString represents, or a
+  null string if this QScriptString is not valid.
+
+  \sa isValid()
+*/
+QString QScriptString::toString() const
+{
+    Q_D(const QScriptString);
+    if (!d)
+        return QString();
+    return d->value;
+}
+
+/*!
+  Returns the string that this QScriptString represents, or a
+  null string if this QScriptString is not valid.
+
+  \sa toString()
+*/
+QScriptString::operator QString() const
+{
+    return toString();
+}
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_SCRIPT